Mario Bettinus, Italian mathematician, astronomer, and philosopher (d. 1657)
Mario Bettinus (Italian name: Mario Bettini; 6 February 1582 – 7 November 1657) was an Italian Jesuit philosopher, mathematician and astronomer. The lunar crater Bettinus was named after him by Giovanni Riccioli in 1651. His Apiaria Universae Philosophiae Mathematicae is an encyclopedic collection of mathematical curiosities. This work had been reviewed by Christoph Grienberger. Bettini was one of the fiercest Jesuit critics of Cavalieri's method of Indivisibles.